Thermostatic vent valve for radiators



July 28, 1925.

E. JACQBUS THERMOSTATIC VENT VALVE FOR RADIATORS Filed' Nov. 8, 1923 ATfORNEYS Patented July 28, 1925. T 1

PATENT omen,

" EDWARD JACOBUS, OF MONTCLAIR, NEW JERSEY.

THERMO STATIC VENT VALVE FOR RAD IATORSQ v Application filed I Iovember 8, 1923. Serial No. 673,453.

' To all whom it may concern."

.Be itknown that I, ED ARD JAoo Us, a

citizen ofthe United States, and a resident of Montclair, in the county of Essex and State of New Jersey, have invented certain new anduseful Improvements in; ThermoQ static Vent Valves for Radiators, of which the following is a specification. l o

,This invention relates in general to thermostatic valves to control the flow of a fluid or fluids therethrough in accordance with the temperature o fthe fluids and more par-.

ticularly the invention relates to a valve,

having thermostatically controlled means for holding the valveopen to permit fluids of a certain range 'of temperatures to pass therethrough and closingthe valve to prevent fluids of temperatures above said rang from escaping through the valve.

The primary object of the invention is to provide a valve of the characterzdescribed embodying novel and improved features of construction whereby the valve shall be thoroughly dependable and accurate in op eration under all the usual working conditions and shall be capable of withstanding hardusage and handling without possibility ofsuch injurythere'to as would'detrimentally affect working adjustment or operation thereof.

.r t "Another object is to provide a valve of the character described comprising a substantially cylindrical casing having a radial outlet, and a semi-circular thermostatic strip for operating a valve to control said outlet so arranged as to produce quick and accurate closing of the valve upon influx of steam or hot'fluid into the casing.

Further objects are 7 to provide such a valve including a substantially semi-circular strip of thermostatic metal secured atone end to the casing of the valve with the other end disposed substantially opposite and distantly spaced'fromthevalve seat, and" an elongated valve-rod so mounted at one end onsaid second-mentioned end of the thermostatic strip and having a valve head so constructed that said second-mentioned end of said strip may be positioned to one side of the axis of the valve seat 'ormove trans versely of said seat in any direction without aifecting proper cooperation of the valve head with said valve seat; to provide a valve of this character in which a float may be connected to said valve rod tomove the rod independently of said thermostatic strip into adapt the valve for engagement with the valve seat to preventa liquid from escaping through the valve; to provide such a valve whichshalli be simple and inexpensive in construction, quick inpermit air to be ejected from the radiator by the incoming steam and prevent the escape of steam after all of the air has been ejected from the radiator. However, it will be understood that the invention is susceptible of use for-other purposesfandthat I do not desire to be understood as limting myself in the'use of the invention except as may be required by the prior art. l p

In saidv drawingsin which the same refer ence characters indicate corresponding and h epa t M F'gure l is a side elevation of a valve con structed in accordance withmy invention, show ng thesame'applied toa radiator; Figure 2 is a'nenlargedl transverse vertical sectional view through ,the valve taken on theline 2-2 ofFigure3;

Figure 3"'is an end elevation of the valve with one end wall removed, 7 showing'the mounting of the thermostatic strip and'the valve rod;

Figure 4 is an Figure 5 is a view similar to Figure 3 showing a modification of the invention to v preventing escapeo'f a liquid therethrough. j 'In thespeciflcembodiment ofth'e invention shown on the drawings, the reference V enlarged detached'partial f sectional and partial side elevational View of the connection of the valve rod with the thermostatic strip,a nd

characterl 1 designates a substantially hollow cylindrical casingclosed at both ends,

said casing being conveniently formed- 0f sheet metal by a drawing operation and: havmg one endm the form of a cover 2Ito which'is' secured a threaded nipple are} connecting the valve to'a radiator A 'of'a steam; heating system; The casing 1 is provided' at one side thereof with an outlet passage 4;,which may be formed in a nipple 5 'secured tothe casing by means of a nut 6 j threaded on the iiiner end thereof. The inner end of said nipple 5 is formed with a valve seat 7 with which cooperates a valve head 8 carried by a valve rod 9 mountedon a curved strip 10 of thermostatic metal, one end of which is secured to the casing adjacent to valve seat 7 II I I I In the present instance one end of the thermostatic strip l 0 is provided with an opeiii'ng l'lto slip over the inner end of the pies between the nut 6 aiid the casing, li erebythe strip I is securely fastened to the the casing. The opposite end of the ther I (istatic strip is disposed substantiall ppposite the valve seat 7 a d distantly spaced therefrom, sai'd endbeing provided with a transverse opening 12 for supporting the valx' erod9, I, III M The verv rod 9 iscof a length to "extend between the free end of, the thermostatic strip and the valve seat Y, and the end of saidrod opposite the valve head 8 is provi'ded with ifed'ucejd' poi-tion 13 loosely fitted within the opeiiingr 12 in thethermostatic sti'ip 10, The end or the '1o cl 9'oiitwardly of the valve head 8 isreduced at 14 to a diame per 'Iess thau. that rthe putlet passage 4, Said reduced end 14; seryi ii-g to hold the valve d i ip s tion to en age h v vet In the 'op'erati'oiihf the valve, when the radiator A is filled with airan'd steam isa'dniitt'ed thereto, the thermostatic strip 10 is distended so as to maintain the valve head 8io utt of engagement withthe seat 7 and perniit the'esc'ape {of air. VVhen, steain enters the valve casing 1, the thermostatic strip is xtended so {as to e usethe free end theieotto move toward and transversely of the valve seat 7. Thisfaction exerts longittltliilahthlfUSt Dn the {valve rod .9 which causes the valve head 8 to eii'ga'ge the seat 7 ahgtreve'nt the escape of 'steai'n through the outlet 4. I v I With this constructiom it will be observed that the ape" 12in the ar-1p 10 and the reduced port on ,13 "of therod 9 permit substantial movement of thegfree en d of the strip 10 transye1'sely.,'of the valve seat 7 in [direction without in any way af- 'fecti'ng the proper engagement of the valve head with the Valve seat Also, the free end o f the strip lQ might be 1oositioned tofone Side of the anisfo fthe valve seat 7; as "by a blow upo ifthe valve casingior rough handling thereof, i'vithout afiectijng prope'r cooperation of the valve head a nd seat. Fur t hermore, the substantially semi-circular shape ofthe strip lOenIsures a quick action of the valve "and a strip of such shape isles s likely to become so accidentally bent as to impair thefo'perat'ion o'ftlie valve. c For instance, I have, found that valve withm y "semi-circular thermostatic strip will quickly andfaccurately ,close with only two ounces of steam pressure, whereas other known thermostatic valves will not close with less than one to five pounds of pressure. The distantly spaced relation of the free end of the thermostatic strip and the valve seat 7 in connection with the elongated valve rod 9, greatly minimizes the effect of transverse movement of the free end of the strip 10 on th valve head 8, since any angular relation of the valve head with the valve seat would be much less with this construction than ene with the free end of theth'ermostatic strip closely adjacent the valve seat. The valve is practically self-adjlistable so as to be always positive and reliable in operation Without requiring any special atten tion after once being installed.

It will be understood that the thermostatic strip 10 be formed of any siiitable metal and in any suitable manner to accomplishthe desired result, and that the connection of the valve rod with the thermostatic strip may be any suitable one as will permit the relative movement of the strip and valve rod to accomplish the objects'of the invention. The valve is simple and inexpe sive in construction, and thep articular shape 01' the thermostatic stripe is "especially adapted for use in a substantially cylindrical casing as shown; which is artistic and pleasing in appearance.

lVh en it is desired to adapt the valve to prevent the escape of water therethrough; 'a

e l 0 fl t 16 y be rigidly seemed to the l FQQQQ Said fl being so positioiied w t espectto' the inlet 3 of the casing 1 that water entering the casing will raise the I float and move the valve rod 9 "so as to ca se closing engagement of the valve head and valve seat 7 It Will be noted thatthe c'onne'ction of the vant rod 9 with the'rin'estatic strip is particularly adapted for permitting the relativemovement"of thevaslve rod and the thermostatic strip as is necessary where a float as described is used.

, Obviously, the details of constructiiinof the valve may be modified or ch1anged by those skilled in the "art w'ithoiit departing from the spirit or scope of the invention, "and therefore I do not desire to be understood -as limiting myself except 'as required by the following claims when construed-in the light of the prior art. I I

Having thus described the invention, what Iclaim is: I I I I I L valve ofthe character described, comprising a substantially cylindrical casing ha-yingan inlet and "outlet, a substantially semi-circular thermostatic strip Within said casing "and having one end fiXedly secured to said casifng adjacent saidyoutletj with the other 'end spaced substantially 'oprod mounted on the inner side'o-i the second mentioned endof said strip and movable longitudinally with and relatively to said strip toward and from said outlet, and a float fixedly connected to said valve rod between said strip and said outlet to actuate said valve rod independently of said strip to close said outlet upon influx of liquid into said casing.

' 2. A valve of the character described, comprising a substantially cylindrical casing having an inlet and an outlet, a substantially semi-circular thermostatic strip within said casing and having one end fixedly secured to said casing adjacent said outlet with the other endspaced substantially opposite said outlet and movable toward and from the outlet upon influx of hot and cold fluid respectively into said casing, said second-mentioned end of said strip having an opening therethrough in substantial alinement With said outlet a valve rod mounted on the inner side of said second-mentionedrod between said strip and said outlet to actuate said valve rod independently of said strip to close said outlet upon influx of liquid into said casing.

3. A valve of the character described, com prising a casing having an inlet and an outlet, a substantially semi-circular thermostatic strip having one end fixedly secured to said casing adjacent said outlet and the other end distantly spaced substantially opposite said outlet and movabletoward and from said outlet upon influx of hot and cold fluid respectively into said casing, said second-mentioned end of the strip having an opening therein in substantial alinement with said outlet, and a valve rod mounted on the inner side of said second-mentioned end of said strip and having a reduced portion loosely fitting said opening, said valve rod also having a reduced portion at its other end to loosely fit in said outlet, whereby said valve rod is longitudinally moved.

by said thermostatic strip to close and open said outlet and said opening in said strip and said first-mentioned reduced portion permit said valve rod to adjust itself rela tively to said strip and said outlet to properly close said outlet.

EDWARD JACOBUS. 

